This standard is issued under the fixed designation ASTM A 269; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon indicates an editorial change since the last revision or reapproval.

This specification covers grades of nominal-wall thickness, stainless steel tubing for general corrosion-resisting and low-or high-temperature service, as designated in Table 1.

The tubing sizes and thickness usually furnished to this specification are 1⁄4 in. (6.4 mm) in inside diameter and larger and 0.020 in. (0.51 mm) in nominal wall-thickness and heavier.

Mechanical properties requirements do not apply to tubing smaller than 1⁄8 in. (3.2 mm) in inside diameter or 0.015 in. (0.38 mm) in thickness. Additional testing requirements may apply for use in ASME B31.3 applications.

ASTM A 262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steel A 370 Test Methods and Definitions for Mechanical Testing of Steel Products A 480/A 480M Specification for General Requirements.



1 This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.10 on Stainless and Alloy Steel Tubular Products. Current edition approved March 1, 2004. Published April 2004. Originally approved in 1944. Last previous edition approved in 2002 as A 269 – 02a.

2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer
Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
A 632 Specification for Seamless and Welded Austenitic Stainless Steel Tubing (Small-Diameter) for General Service
A 1016/A 1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
E 527 Practice for Numbering Metals and Alloys (UNS)
2.2 ASME Piping Code:
ASME B31.3 Process Piping3

Nominal Pipe Size (NPS): 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2 inch
Outside Diameter: 10,3 - 73 mm (0,405 - 2,875 inch)
Wall Thickness: 1,24 - 7,01 (0,049 - 0,276 inch)

Notes:

1. Steel Grades - TP 304, TP 304L, TP 316, TP 316L, TP 321
2. Technical requirements acc. to ASTM A 450.
   
3. Size of pipes in accordance with ANSI/ASME B36.19M.
   
4. The quality of pipes is ensured by manufacturing process and non-destructive test.
   
5. Hardness of metal not less than 100 HB.
   
6. Length tolerance of measured pipes not greater than +10 mm.
   
7. Monitoring of continuity of metal by pneumotest with pressure of 6 bar is available.
   
8. Intergranular corrosion test in accordance with ASTM A262, Practice E is available.

Material Comparison Tables (ASTM →KS, JIS, DIN, BS, NBN, NF, UNI)

For More Details,Please refer to: ASTM A269/269M